Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AB00604987612 found under Cylinder Clutch by Ar Bee Corp. The National Stock Number assigned to this part is 2520004145978, and the Federal Supply Class is 2520 Vehicular Power Transmission Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AB00604987612.